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michaelficarra committed May 31, 2024
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2 changes: 1 addition & 1 deletion ecmarkup.js
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Expand Up @@ -1552,5 +1552,5 @@ document.addEventListener('DOMContentLoaded', () => {
});

let sdoMap = JSON.parse(`{}`);
let biblio = JSON.parse(`{"refsByClause":{},"entries":[{"type":"clause","id":"sec-iterator.from","title":"Iterator.from ( ...items )","titleHTML":"Iterator.from ( ...<var>items</var> )","number":"1"},{"type":"clause","id":"sec-iteratorprototype.flat","titleHTML":"Iterator.prototype.flat ( )","number":"2"}]}`);
let biblio = JSON.parse(`{"refsByClause":{},"entries":[{"type":"clause","id":"sec-iterator.concat","title":"Iterator.concat ( ...items )","titleHTML":"Iterator.concat ( ...<var>items</var> )","number":"1"}]}`);
;let usesMultipage = false
16 changes: 5 additions & 11 deletions index.html
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<!doctype html>
<head><meta charset="utf-8">
<title>Iterator Sequencing</title><script src="ecmarkup.js?cache=Jqa_oi1m" defer=""></script><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.0.1/styles/base16/solarized-light.min.css"><link rel="stylesheet" href="ecmarkup.css"></head><body><div id="shortcuts-help">
<title>Iterator Sequencing</title><script src="ecmarkup.js?cache=iUUAaZmt" defer=""></script><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.0.1/styles/base16/solarized-light.min.css"><link rel="stylesheet" href="ecmarkup.css"></head><body><div id="shortcuts-help">
<ul>
<li><span>Toggle shortcuts help</span><code>?</code></li>
<li><span>Toggle "can call user code" annotations</span><code>u</code></li>
Expand All @@ -11,16 +11,10 @@
</ul></div><div id="menu-toggle"><svg xmlns="http://www.w3.org/2000/svg" style="width:100%; height:100%; stroke:currentColor" viewBox="0 0 120 120">
<title>Menu</title>
<path stroke-width="10" stroke-linecap="round" d="M30,60 h60 M30,30 m0,5 h60 M30,90 m0,-5 h60"></path>
</svg></div><div id="menu-spacer" class="menu-spacer"></div><div id="menu"><div id="menu-search"><input type="text" id="menu-search-box" placeholder="Search..."><div id="menu-search-results" class="inactive"></div></div><div id="menu-pins"><div class="menu-pane-header">Pins<button class="unpin-all">clear</button></div><ul id="menu-pins-list"></ul></div><div class="menu-pane-header">Table of Contents</div><div id="menu-toc"><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-iterator.from" title="Iterator.from ( ...items )"><span class="secnum">1</span> Iterator.from ( ...<var>items</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-iteratorprototype.flat" title="Iterator.prototype.flat ( )"><span class="secnum">2</span> Iterator.prototype.flat ( )</a></li></ol></div></div><div id="spec-container"><h1 class="version">Stage 1 Draft / January 23, 2024</h1><h1 class="title">Iterator Sequencing</h1>
</svg></div><div id="menu-spacer" class="menu-spacer"></div><div id="menu"><div id="menu-search"><input type="text" id="menu-search-box" placeholder="Search..."><div id="menu-search-results" class="inactive"></div></div><div id="menu-pins"><div class="menu-pane-header">Pins<button class="unpin-all">clear</button></div><ul id="menu-pins-list"></ul></div><div class="menu-pane-header">Table of Contents</div><div id="menu-toc"><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-iterator.concat" title="Iterator.concat ( ...items )"><span class="secnum">1</span> Iterator.concat ( ...<var>items</var> )</a></li></ol></div></div><div id="spec-container"><h1 class="version">Stage 1 Draft / May 31, 2024</h1><h1 class="title">Iterator Sequencing</h1>

<emu-clause id="sec-iterator.from">
<h1><span class="secnum">1</span> Iterator.from ( ...<var>items</var> )</h1>
<emu-alg><ol><li>If the number of elements in <var>items</var> is 1, then<ol><li>Let <var>iter</var> be the first element of <var>items</var>.</li><li>Let <var>iteratorRecord</var> be ?&nbsp;<emu-xref aoid="GetIteratorFlattenable"><a href="https://tc39.es/proposal-iterator-helpers#sec-getiteratorflattenable" class="e-user-code">GetIteratorFlattenable</a></emu-xref>(<var>iter</var>, <emu-const>iterate-strings</emu-const>).</li><li>Let <var>hasInstance</var> be ?&nbsp;<emu-xref aoid="OrdinaryHasInstance"><a href="https://tc39.es/ecma262/#sec-ordinaryhasinstance" class="e-user-code">OrdinaryHasInstance</a></emu-xref>(<emu-xref href="#sec-iterator-constructor"><a href="https://tc39.es/proposal-iterator-helpers#sec-iterator-constructor">%Iterator%</a></emu-xref>, <var>iteratorRecord</var>.<var class="field">[[Iterator]]</var>).</li><li>If <var>hasInstance</var> is <emu-val>true</emu-val>, then<ol><li>Return <var>iteratorRecord</var>.<var class="field">[[Iterator]]</var>.</li></ol></li><li>Let <var>wrapper</var> be <emu-xref aoid="OrdinaryObjectCreate"><a href="https://tc39.es/ecma262/#sec-ordinaryobjectcreate">OrdinaryObjectCreate</a></emu-xref>(<emu-xref href="#sec-wrapforvaliditeratorprototype-object"><a href="https://tc39.es/proposal-iterator-helpers#sec-wrapforvaliditeratorprototype-object">%WrapForValidIteratorPrototype%</a></emu-xref>, « <var class="field">[[Iterated]]</var>&nbsp;»).</li><li>Set <var>wrapper</var>.<var class="field">[[Iterated]]</var> to <var>iteratorRecord</var>.</li><li>Return <var>wrapper</var>.</li></ol></li><li>Let <var>closure</var> be a new <emu-xref href="#sec-abstract-closure"><a href="https://tc39.es/ecma262/#sec-abstract-closure">Abstract Closure</a></emu-xref> with no parameters that captures <var>items</var> and performs the following steps when called:<ol><li>Repeat, while <var>items</var> is not empty,<ol><li>Let <var>iter</var> be the first element of <var>items</var>.</li><li>Remove the first element from <var>items</var>.</li><li>Let <var>iteratorRecord</var> be ?&nbsp;<emu-xref aoid="GetIteratorFlattenable"><a href="https://tc39.es/proposal-iterator-helpers#sec-getiteratorflattenable" class="e-user-code">GetIteratorFlattenable</a></emu-xref>(<var>iter</var>, <emu-const>iterate-strings</emu-const>).</li><li>Let <var>innerAlive</var> be <emu-val>true</emu-val>.</li><li>Repeat, while <var>innerAlive</var> is <emu-val>true</emu-val>,<ol><li>Let <var>innerNext</var> be ?&nbsp;<emu-xref aoid="IteratorStep"><a href="https://tc39.es/ecma262/#sec-iteratorstep" class="e-user-code">IteratorStep</a></emu-xref>(<var>iteratorRecord</var>).</li><li>If <var>innerNext</var> is <emu-val>false</emu-val>, then<ol><li>Set <var>innerAlive</var> to <emu-val>false</emu-val>.</li></ol></li><li>Else,<ol><li>Let <var>innerValue</var> be ?&nbsp;<emu-xref aoid="IteratorValue"><a href="https://tc39.es/ecma262/#sec-iteratorvalue" class="e-user-code">IteratorValue</a></emu-xref>(<var>innerNext</var>).</li><li>Let <var>completion</var> be <emu-xref aoid="Completion"><a href="https://tc39.es/ecma262/#sec-completion-ao">Completion</a></emu-xref>(<emu-xref aoid="Yield"><a href="https://tc39.es/ecma262/#sec-yield" class="e-user-code">Yield</a></emu-xref>(<var>innerValue</var>)).</li><li>If <var>completion</var> is an <emu-xref href="#sec-completion-record-specification-type"><a href="https://tc39.es/ecma262/#sec-completion-record-specification-type">abrupt completion</a></emu-xref>, then<ol><li>Return ?&nbsp;<emu-xref aoid="IteratorClose"><a href="https://tc39.es/ecma262/#sec-iteratorclose" class="e-user-code">IteratorClose</a></emu-xref>(<var>iteratorRecord</var>, <var>completion</var>).</li></ol></li></ol></li></ol></li></ol></li></ol></li><li>Return <emu-xref aoid="CreateIteratorFromClosure"><a href="https://tc39.es/proposal-iterator-helpers#sec-createiteratorfromclosure">CreateIteratorFromClosure</a></emu-xref>(<var>closure</var>, <emu-val>"Iterator Helper"</emu-val>, <emu-xref href="#sec-%iteratorhelperprototype%-object"><a href="https://tc39.es/proposal-iterator-helpers#sec-%iteratorhelperprototype%-object">%IteratorHelperPrototype%</a></emu-xref>, «&nbsp;»).</li></ol></emu-alg>
</emu-clause>

<emu-clause id="sec-iteratorprototype.flat">
<h1><span class="secnum">2</span> Iterator.prototype.flat ( )</h1>
<p>This method performs the following steps when called:</p>
<emu-alg><ol><li>Let <var>O</var> be the <emu-val>this</emu-val> value.</li><li>If <var>O</var> <emu-xref href="#sec-object-type"><a href="https://tc39.es/ecma262/#sec-object-type">is not an Object</a></emu-xref>, throw a <emu-val>TypeError</emu-val> exception.</li><li>Let <var>iterated</var> be ?&nbsp;<emu-xref aoid="GetIteratorDirect"><a href="https://tc39.es/proposal-iterator-helpers#sec-getiteratordirect" class="e-user-code">GetIteratorDirect</a></emu-xref>(<var>O</var>).</li><li>Let <var>closure</var> be a new <emu-xref href="#sec-abstract-closure"><a href="https://tc39.es/ecma262/#sec-abstract-closure">Abstract Closure</a></emu-xref> with no parameters that captures <var>iterated</var> and performs the following steps when called:<ol><li>Repeat,<ol><li>Let <var>next</var> be ?&nbsp;<emu-xref aoid="IteratorStep"><a href="https://tc39.es/ecma262/#sec-iteratorstep" class="e-user-code">IteratorStep</a></emu-xref>(<var>iterated</var>).</li><li>If <var>next</var> is <emu-val>false</emu-val>, return <emu-val>undefined</emu-val>.</li><li>Let <var>value</var> be ?&nbsp;<emu-xref aoid="IteratorValue"><a href="https://tc39.es/ecma262/#sec-iteratorvalue" class="e-user-code">IteratorValue</a></emu-xref>(<var>next</var>).</li><li>Let <var>innerIterator</var> be <emu-xref aoid="Completion"><a href="https://tc39.es/ecma262/#sec-completion-ao">Completion</a></emu-xref>(<emu-xref aoid="GetIteratorFlattenable"><a href="https://tc39.es/proposal-iterator-helpers#sec-getiteratorflattenable" class="e-user-code">GetIteratorFlattenable</a></emu-xref>(<var>value</var>, <emu-const>reject-strings</emu-const>)).</li><li><emu-xref aoid="IfAbruptCloseIterator"><a href="https://tc39.es/ecma262/#sec-ifabruptcloseiterator" class="e-user-code">IfAbruptCloseIterator</a></emu-xref>(<var>innerIterator</var>, <var>iterated</var>).</li><li>Let <var>innerAlive</var> be <emu-val>true</emu-val>.</li><li>Repeat, while <var>innerAlive</var> is <emu-val>true</emu-val>,<ol><li>Let <var>innerNext</var> be <emu-xref aoid="Completion"><a href="https://tc39.es/ecma262/#sec-completion-ao">Completion</a></emu-xref>(<emu-xref aoid="IteratorStep"><a href="https://tc39.es/ecma262/#sec-iteratorstep" class="e-user-code">IteratorStep</a></emu-xref>(<var>innerIterator</var>)).</li><li><emu-xref aoid="IfAbruptCloseIterator"><a href="https://tc39.es/ecma262/#sec-ifabruptcloseiterator" class="e-user-code">IfAbruptCloseIterator</a></emu-xref>(<var>innerNext</var>, <var>iterated</var>).</li><li>If <var>innerNext</var> is <emu-val>false</emu-val>, then<ol><li>Set <var>innerAlive</var> to <emu-val>false</emu-val>.</li></ol></li><li>Else,<ol><li>Let <var>innerValue</var> be <emu-xref aoid="Completion"><a href="https://tc39.es/ecma262/#sec-completion-ao">Completion</a></emu-xref>(<emu-xref aoid="IteratorValue"><a href="https://tc39.es/ecma262/#sec-iteratorvalue" class="e-user-code">IteratorValue</a></emu-xref>(<var>innerNext</var>)).</li><li><emu-xref aoid="IfAbruptCloseIterator"><a href="https://tc39.es/ecma262/#sec-ifabruptcloseiterator" class="e-user-code">IfAbruptCloseIterator</a></emu-xref>(<var>innerValue</var>, <var>iterated</var>).</li><li>Let <var>completion</var> be <emu-xref aoid="Completion"><a href="https://tc39.es/ecma262/#sec-completion-ao">Completion</a></emu-xref>(<emu-xref aoid="Yield"><a href="https://tc39.es/ecma262/#sec-yield" class="e-user-code">Yield</a></emu-xref>(<var>innerValue</var>)).</li><li>If <var>completion</var> is an <emu-xref href="#sec-completion-record-specification-type"><a href="https://tc39.es/ecma262/#sec-completion-record-specification-type">abrupt completion</a></emu-xref>, then<ol><li>Let <var>backupCompletion</var> be <emu-xref aoid="Completion"><a href="https://tc39.es/ecma262/#sec-completion-ao">Completion</a></emu-xref>(<emu-xref aoid="IteratorClose"><a href="https://tc39.es/ecma262/#sec-iteratorclose" class="e-user-code">IteratorClose</a></emu-xref>(<var>innerIterator</var>, <var>completion</var>)).</li><li><emu-xref aoid="IfAbruptCloseIterator"><a href="https://tc39.es/ecma262/#sec-ifabruptcloseiterator" class="e-user-code">IfAbruptCloseIterator</a></emu-xref>(<var>backupCompletion</var>, <var>iterated</var>).</li><li>Return ?&nbsp;<emu-xref aoid="IteratorClose"><a href="https://tc39.es/ecma262/#sec-iteratorclose" class="e-user-code">IteratorClose</a></emu-xref>(<var>completion</var>, <var>iterated</var>).</li></ol></li></ol></li></ol></li></ol></li></ol></li><li>Let <var>result</var> be <emu-xref aoid="CreateIteratorFromClosure"><a href="https://tc39.es/proposal-iterator-helpers#sec-createiteratorfromclosure">CreateIteratorFromClosure</a></emu-xref>(<var>closure</var>, <emu-val>"Iterator Helper"</emu-val>, <emu-xref href="#sec-%iteratorhelperprototype%-object"><a href="https://tc39.es/proposal-iterator-helpers#sec-%iteratorhelperprototype%-object">%IteratorHelperPrototype%</a></emu-xref>, « <var class="field">[[UnderlyingIterator]]</var>&nbsp;»).</li><li>Set <var>result</var>.<var class="field">[[UnderlyingIterator]]</var> to <var>iterated</var>.</li><li>Return <var>result</var>.</li></ol></emu-alg>
<emu-clause id="sec-iterator.concat">
<h1><span class="secnum">1</span> Iterator.concat ( ...<var>items</var> )</h1>
<emu-alg><ol><li>Let <var>closure</var> be a new <emu-xref href="#sec-abstract-closure"><a href="https://tc39.es/ecma262/#sec-abstract-closure">Abstract Closure</a></emu-xref> with no parameters that captures <var>items</var> and performs the following steps when called:<ol><li>Repeat, while <var>items</var> is not empty,<ol><li>Let <var>iter</var> be the first element of <var>items</var>.</li><li>Remove the first element from <var>items</var>.</li><li>Let <var>iteratorRecord</var> be ?&nbsp;<emu-xref aoid="GetIteratorFlattenable"><a href="https://tc39.es/proposal-iterator-helpers#sec-getiteratorflattenable" class="e-user-code">GetIteratorFlattenable</a></emu-xref>(<var>iter</var>, <emu-const>iterate-strings</emu-const>).</li><li>Let <var>innerAlive</var> be <emu-val>true</emu-val>.</li><li>Repeat, while <var>innerAlive</var> is <emu-val>true</emu-val>,<ol><li>Let <var>innerNext</var> be ?&nbsp;<emu-xref aoid="IteratorStep"><a href="https://tc39.es/ecma262/#sec-iteratorstep" class="e-user-code">IteratorStep</a></emu-xref>(<var>iteratorRecord</var>).</li><li>If <var>innerNext</var> is <emu-val>false</emu-val>, then<ol><li>Set <var>innerAlive</var> to <emu-val>false</emu-val>.</li></ol></li><li>Else,<ol><li>Let <var>innerValue</var> be ?&nbsp;<emu-xref aoid="IteratorValue"><a href="https://tc39.es/ecma262/#sec-iteratorvalue" class="e-user-code">IteratorValue</a></emu-xref>(<var>innerNext</var>).</li><li>Let <var>completion</var> be <emu-xref aoid="Completion"><a href="https://tc39.es/ecma262/#sec-completion-ao">Completion</a></emu-xref>(<emu-xref aoid="Yield"><a href="https://tc39.es/ecma262/#sec-yield" class="e-user-code">Yield</a></emu-xref>(<var>innerValue</var>)).</li><li>If <var>completion</var> is an <emu-xref href="#sec-completion-record-specification-type"><a href="https://tc39.es/ecma262/#sec-completion-record-specification-type">abrupt completion</a></emu-xref>, then<ol><li>Return ?&nbsp;<emu-xref aoid="IteratorClose"><a href="https://tc39.es/ecma262/#sec-iteratorclose" class="e-user-code">IteratorClose</a></emu-xref>(<var>iteratorRecord</var>, <var>completion</var>).</li></ol></li></ol></li></ol></li></ol></li></ol></li><li>Return <emu-xref aoid="CreateIteratorFromClosure"><a href="https://tc39.es/proposal-iterator-helpers#sec-createiteratorfromclosure">CreateIteratorFromClosure</a></emu-xref>(<var>closure</var>, <emu-val>"Iterator Helper"</emu-val>, <emu-xref href="#sec-%iteratorhelperprototype%-object"><a href="https://tc39.es/proposal-iterator-helpers#sec-%iteratorhelperprototype%-object">%IteratorHelperPrototype%</a></emu-xref>, «&nbsp;»).</li></ol></emu-alg>
</emu-clause>
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